OK one more thing that is more recent...
I am an avid whitewater kayaker in my mid 60's. On steep creeks stuff just comes at you FAST.
I've noticed that my mental processing speed was slowing down and steeps that used to be fun now feel like survival kayaking. But! since returning to chess last year and playing some blitz here and elsewhere my mental processing&decision making speed has increased again. Stuff that had started to seem too fast&dangerous is now slowing down. So I can kayak more years and get injured fewer times.
I am an avid whitewater kayaker in my mid 60's. On steep creeks stuff just comes at you FAST.
I've noticed that my mental processing speed was slowing down and steeps that used to be fun now feel like survival kayaking. But! since returning to chess last year and playing some blitz here and elsewhere my mental processing&decision making speed has increased again. Stuff that had started to seem too fast&dangerous is now slowing down. So I can kayak more years and get injured fewer times.